Hey Shirley,
I see you are using Enfold Theme Options v3.8 with the latest WordPress, WordPress has made a lot of core changes, such as updating the PHP version it uses.
Typically updating Enfold to the latest version will solve. Or if your webhost is using PHP v5.4 you can try to ask them to update your PHP to v5.6

Best regards,
Mike

Hi,
You must always leave the “template” as “enfold”, if you are starting from scratch you can rename all other lines, but if you have already built your site with the child theme and then want to change the info, then you must also leave the “Theme Name” the same.
Hope this helps.

Best regards,
Mike

Hey bobjonesdesigns,
I see that your images in the media library are the same size, but when added to the slider they are showing as different sizes.
I added this css to your Enfold Theme Options > General Styling > Quick CSS field to force the same size for different screen widths:

@media only screen and (max-width: 437px) { 
#top.home .avia-slideshow-inner {
height: 150px !important;
}
}
@media only screen and (min-width: 438px) and (max-width: 1023px) { 
#top.home .avia-slideshow-inner {
height: 306px !important;
}
}
@media only screen and (min-width: 1024px) and (max-width: 1227px) { 
#top.home .avia-slideshow-inner {
height: 368px !important;
}
}
@media only screen and (min-width: 1228px) { 
#top.home .avia-slideshow-inner {
height: 443px !important;
}
}

Please clear your browser cache and check.

Best regards,
Mike

Hi,
Please include the url to the page in question so we can take a closer look.

Best regards,
Mike

Hi,
Please check which PHP version your webhost is using, the minimum is v5.6, but v7.x is recommend. Typically if your webhost is using v5.4 this can lead to errors.
Can you please include a admin login in the private content area so we can take a closer look.

Best regards,
Mike

Hi,
To center the widget, Try this code in the General Styling > Quick CSS field:

#avia_partner_widget-2.widget {
margin: auto !important; 
max-width: 200px!important; 
}

For your second question, I don’t see a dotted line between your menu items, Please see screenshot in Private Content area, and advise.

Best regards,
Mike

Hey VerhoevenGroup,
Please include the url to the page in question so we can take a closer look.

Best regards,
Mike

Hi,
According to your server info, your PHP ZipArchive Extension is Disabled, please ask your webhost to enable.

Best regards,
Mike

Hi,
Glad we were able to help, we will close this now. Thank you for using Enfold.

For your information, you can take a look at Enfold documentation here
And if there are features that you wish Enfold had, you can request them and vote the requested ones here
For any other questions or issues, feel free to start new threads under Enfold sub forum and we will gladly try to help you :)

Best regards,
Mike

Hi,
We are happy to assist :)
I look forward to seeing what you build next!
We will close this now, Thank you for using Enfold.

Best regards,
Mike

Hi,
Yes this is strange, no wonder we were not understanding each other :)
Now let me ask if you have tried logging in as the user you gave us, or is this from a different user, like your own account?
Also what browser are you using? If your browser allows languages, what happens if you set your default language to English?

Best regards,
Mike

Hi,
Yes, this will ensure that your customizations remain after each update.
Unless there is anything else we can assist with this issue, shall we close this then?

Best regards,
Mike

Hi,
I have installed your child theme and added the code above to the child theme functions.php.
All seems to be working correctly, please clear your browser cache and check.

Best regards,
Mike

Hi,
Sorry, I took a look at your homepage and found your frontend & backend matched, Please see screenshot in Private Content area.
I also looked at 3 other random pages.
Then I tested on my localhost RTL:

and LTR:

Is this only happening on some pages?

Best regards,
Mike

Hi,
You could set a standard size for your videos with this css in the Enfold Theme Options > General Styling > Quick CSS field

iframe[src*=youtube] {
	    width: 560px!important; 
	    height: 315px!important; 
}

or if you want your videos to be responsive try using percentages like this:

iframe[src*=youtube] {
	    width: 100%!important; 
	    height: 98%!important; 
}

in my tests this worked out to be very close to the 16:9 ratio.
but feel free to adjust to suit.

Best regards,
Mike